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| Patents Granted on 1803-05-17 | |||||
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| Number | Date | Patentee | Title | Type | |
| 452X | May 17, 1803 | J.T. Hawkins, R. French | Cutting Grain and Grass | lawn mowers | |
| 453X | May 17, 1803 | J.J. Hawkins | Pentegraph and parallel ruler | parallel rules | |
| 454X | May 17, 1803 | B. Allison | Improvement in the Application of the Principle of Rectifying or Improving Spirits | distilling | |